Storage battery.



H. L. & J. M. PETERSON & A. 0. RETRUM. STORAGE BATTERY.

APPLICATION FILED F333], 1911. RENEWED NOV. 17, 19 11.

1,012,908, Patented Dec. 26, 1911.

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H. L. 6511. M. PETERSON 6: A. 0. RETRUM. STORAGE BATTERY.

APPLICATION FILED PEB.7, 1911. RENEWED NOV. 17, 1911.

1,012,908. Patented Dec. 26, 1911.

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STATES PATENT OFFICE.

HENRY L. PETERSON, 0F CHARLES CITY, IOWA, AND JOHN M, IEETEBSON ANDALVIN 0.

BETRUM, 0F DAWSON, MINNESOTA.

STORAGE BATTERY.

Specification of Letters Patent.

Application filed February 7, 1911, Serial No. 607,056. Renewed November17, 1911. Serial No. 660,966. I

To all whom it may concern:

Be it known that we, HENRY L. PETERSON, residing at Charles City, in thecounty of Floyd and State of Iowa, and JOHN M. PETERSON and ALVIN O.RETRUM, residing at Dawson, in the county of- Lao Qui Parle and State ofMinnesota, citizens of the United States, have invented certain new anduseful Improvements in Storage Batteries, of which the following is aspecification.

This invention relates to improvements in storage cells and has for oneof its objects to provide a separator plate of such construction thatthe active material is more evenly distributed and supported against theplates to prevent the same settling and packing.

Another object is to provide a protector in the form of an envelop forthe plates.

Other objects and advantages will be apparent from the followingdescription and with particular reference to the accompanying drawings,it being understood that changes in the specific structure shown anddescribed may be made within the scope of the claim without departingfrom the spirit of the invention.

In the accompanying drawings: Figure 1 is a front elevation of one ofthe inside positive plates. Fig. 2 is a vertical section on the line 22of Fig. 1. Fig. 3 is a front elevation of one of the outside negativeplates. Fig. 4 is a vertical section on the line 4-4 of Fig. 3, Fig. 5is a front elevation of the envelop for the positive plates, Fig. 6 is atransverse section on the line 66 of Fig. 5. Fig. 7 is an end elevationof one of the negative plate envelops.

Referring particularly to the drawings, 1 represents the envelop adaptedto contain the positive plates, and which is composed of acid proofmaterial such as celluloid, fiberloid or other similar substance. Thisenvelop is bent into U-shaped formation and is perforated as at 2 topermit the entranceof the exciting fluid of the cell. On either side ofthe envelop are vertically arranged separator ribs 3 which may be formedintegrally with the envelop or cemented thereon, and which extend belowthe bottom of the envelop to provide the supporting legs 4. The positiveplates which will be later described are placed in this envelop and thevertical ends 5 of the envelop brought to.- gether and cemented as at 6in Fig. 6.

The envelop 1 for the outside negative plates are formed of the samematerial and of similar construction to the one just described exceptthat the vertical portion 7 extends only a short distance upward andparallel to the other side. This envelop is also formed with theseparator ribs and supporting legs. The positive plates 8 which areformed of any suitable proportions of litharge and minium or massicotare provided with the U-shaped struck up portions 9, extending outwardlyfrom the plate on one side and the similarly shaped portions 10extending outwardly from the opposite side of the plate. These struck upportions are arranged in diagonal lines so that the active materialplaced in the envelop above described will be supported over a greaterarea on both sides of the plate than would be thecase were the portionsstruck up in vertical and horizontal lines as shown in the patent toMacDougall, number 537,474 issued April 16, 1895. In this constructionthere exist vertical lines of open spaces between the vertical lines ofthe struck up portions which would permit the active material to becomeloosened and settle down and pack in the lower portion of the envelop,thus materially decreasing the effectiveness of the material. In thepresent application there does not exist vertical open spaces.

The outer or negative plate 11 has the struck up portions 9 extendingonly from one face, and in positioning this plate in a cell, the struckup portions are directed inwardly toward the center of the cell andtoward the positive plate. Each of the positive and negative plates iswrapped in a very thin acid proof tissue such as paper. The plates arealso provided with the terminal lugs 12.

The scaling up of the vertical edges of the envelop prevents any shortcircuiting in the cell, and also should the plates buckle, the edgeswould not come together. The sealing up of the plates in the acid prooftissue prevents the escape of the active material so that the same isalways spread approximately over the entire surface of the plate to beacted on by the excitant fluid.

The form of cell illustrated shows the use i the excitant fluid,therethrough and permit ting the ready access through the perforationsof the envelop to attack the plates.

From the foregoing it will be readily seen that we haveprovided a simplean effective storage cell, one within which t e active material isprevented settling and packing in the lower part of the cell, saidmaterial being supported more evenly over the entire face of the plates,furthermore the .acid proof envelops and tissue holds the activematerial from escaping into the cell container.

What is claimed is:

A storage cell including a container, acid proof envelops in saidcontainer, said envelops being formed of a single sheet of perforatedmaterial and bent into U-form, 5 ribs on the outer face of said envelopsextending therebelow to form supporting feet,

.plates having diagonal series of struck up portions, each alternateseries projecting from one side of the plate and each other alternateseries projecting from the opposite side of the plate, said plates beingwrapped in acid proof tissue and adapted to contain active material,said plates being positioned in said envelop, said envelops having theirvertical end edges brought together and sealed, said envelops adapted tocontain positive plates, and envelops to support negative plates, saidlast named envelopsbeing formed of a single sheet of perforated acidproof material and bent to U-form, one of the arms of said U beingshorter than the other one.

In testimony whereof I aflix my signature, in presence of two witnesses.

HENRY L. PETERSON.

WiFiesses: v

M. W. ELLIs, G. M. WEDTKE. V

In testimony whereof we affix our signatures in the presence of twowitnesses.

JOHN M. PETERSON. ALVIN 'O. RETRUM. Witnesses:

LEWIS PETERSON, C. E. RETRUM.

Copies of this patent may be obtained for five cen'tsi each, byaddressing the Commissioner of Patents,

' Washington, D. c."

